The new revision of the free Motion Mountain physics text can bedownloaded at

http://www.motionmountain.net

The 17th revision adds pictures of our environment in the universe atlarge scales, explains how to enjoy Heron's fountain, gives animproved explanation of solitons, tells about the idea of using anelevator to get into outer space, shows how a maximum force in natureexplains the darkness at night and predicts the size of the universe,tells why relativistic length contraction is not a danger forsnow-boarders, shows how the world looks to the colour blind,explains the physics of tsunamis and tells how to use Galileanmechanics to earn over 1 million pound sterling per evening. A5-line summary of modern physics is given and a prize for the firstsolution to a car parking problem is offered.

The text also explains and how you can build a loudspeaker with aninfrared laser beam and no moving parts at all, by modulating thebeam and heating the air. The device, invented in 1992 by Martin vander Mark, provides a way to realize an invisible loudspeaker.

Many improvements make the text even more readable than before. Thewhole remains as surprising and thought-provoking as ever, on each ofits over 1000 pages. They lead through a structured and entertainingwalk through the whole of physics, from classical mechanics torelativity, electrodynamics, thermodynamics, quantum theory, nuclearphysics and unification. There should not be any boring page.Enjoy!